Curie

Curie is an almost obsolete unit of radioactivity. It has now been replaced by becquerel.

Curie was named after Marie Skłodowska-Curie and Pierre Curie, who pioneered the study of the radioactive elements polonium and radium.

1 curie was equal to the radioactivity of 1 gram of radium-226. This is a very large unit because radium-226 has a half-life of 1602 years.

In 1960, the curie was replaced by the becquerel, the unit of radioactivity in the International System of Units (SI).

1 Ci = 3.7 × 1010 Bq

Thus, the curie is currently practically not used, giving way to a more convenient unit - the becquerel. However, it remains a tribute to the outstanding scientists Marie and Pierre Curie.

Curie is a unit of measurement of radioactivity that is almost obsolete. It was replaced by a more convenient unit of measurement - the becquerel (Bq). The Curie unit is obsolete because it is used only in radiation science.

Curie was introduced in 1925 and its name was given in honor of Marie Skłodowska-Curie, a French scientist who, along with her husband Pierre-Curie, discovered radium and polonium and made important contributions to the development of nuclear physics.

The Curie unit is used to measure the activity of radioactive materials. Activity is measured in disintegrations per second. One Curie is equal to the activity at which one gram of radioactive material decays once per second.

However, currently Curie is practically not used in physics, since it is not convenient for use in everyday life. Instead, becquerels are more convenient units of measurement for determining the activity of radioactive substances. Becquerel was introduced in 1896 and named after the French scientist Henri Becquerel, who discovered radioactivity.

Thus, the Curie is actually an outdated unit of measurement of radioactivity and is not used in modern science. Instead, more convenient units such as the becquerel are used to measure the activity of radioactive substances in the environment.

Curie. What is this?

The unit of radioactivity is the curie, a designation in the SI system of units, not the CISEI. The prefix is ​​written with a hyphen: kyur-tetragram. Sometimes it is abbreviated “Ktg”.

It is the standard unit of measurement for the activity of radioactive drugs in the International System of Units (SI). Curie was named after Marie Curie, a female physicist who, together with her husband Peter Curie, was awarded the Nobel Prize in Physics for their research into radioactivity and chemical elements used in medicine. The curie unit of radioactivity is a measurement of the radioactivity of materials. The unit of radioactivity is taken to be the curie (symbol K) - the amount of activity of atoms of a substance at which 3.7 * 10^-10 Bq decays in 1 s (in practice, using natural uranium, the most common substance in nature, a smaller label is used - 2 .4*10^9 decays per second), and a device for measuring radioactivity (Geiger counter) registers one decay. The unit of activity is expressed in Becquerels (Bq) (1 Bq - activity, where one radioactive atom decays in 1 sec). Most often used in nuclear energy. The activity of a radioactive drug is measured either in Bq/kg or in the internal SI unit dial/l.